, to the other crisis capturing the world's attention. new concerns that syria may be preparing to use chemical weapons against rebels, trying to overthrow the country's government. today, neighboring turkey, is asking nato for patriot missiles to defend itself as a precaution. president obama has warned syria the u.s. will respond if chemical weapons are employed. >>> back in this country, federal health officials say the flu season is already here. it's the earliest start in nearly a decade. and take a look at this map. widespread flu already being reported from tennessee into the deep south, texas, missouri and georgia not far behind. this year's strain could be dangerous for children and the elderly. doctors' advice here, get your flu shots. >>> meanwhile here in new york, police trying to find the man in this subway surveillance video, arguing with another man in the middle of the day. seconds later, he pushed that man into the path of an oncoming train. the man was killed. police are checking other video, hoping to find a clear image of the killer. no word on what the two were arguing abo
